Charles g



(No Model.)

C. G. WHITE.

PUMP.

No. 602,492. Patented Apr'. 19, 1898.

M @MI .mim d@ w UNITED STATES nPATENT OFFICE.

CHARLES G. WHITE, OF VOODLAND, CALIFORNIA, ASSIGNOR OF ONE-HALF TO J. F.HINK, OF SAME PLACE.

PUMP.

SPECIFICATION forming part of Letters Patent No. 602,492, dated April19, 1898.

Application filed April 2, 1897. Serial No. 630,436. (No model.)

To all whom t may concern: tlected and divergent and connected at theirBe it known that I, CHARLES G. l/VHITE, a extremities with the upperconverging walls citizen of the United States, residing at Voodof thecasing. The deflected terminals 2 of land, in the'county of Yolo andState of Calithe diaphragm are formed with openings, 55 5 fornia, haveinvented anew and usefulPump, which are closed by valves 3 and 4 and byof which the following is a specification. means of which communicationis established This invention relates to that class of pumps between theupper and lower portions of the or engines embodying in their structurean casingformedby theintermediatediaphragm. oscillating piston operatingin a casing be- The upper converging walls are united by 6o 1o tween aset of four valves, two controlling inmeans of a crown-piece 0r domewhich induction-ports and the remaining two governcloses and forms anair-space 5, which coniug eduction ports, whereby a continuous tains asufficient amount of air to insure a stream of water or uid is secured.steady and uniform stream when the pump The present invention aims toimprove the is in operation. The arcuate portion l of the 65 15 generalconstruction, whereby the piston in intermediate diaphragm isconcavo-conveX,

its operation is prevented from rapidly grindwhereby chambers are formedat its extremiing out or wearing away the seat over which ties toreceive any foreign matter which will it sweeps in its oscillatorymovements, and readily escape through the valve-controlled whereby atight joint is maintained for a openings when the pump is inoperation,the 7o 2o greater period of time than is possible by escape ofsuch matter being facilitated by similar constructions for a likepurpose, and having the valves 3 and 4 opening inwardly whereby the pumpis maintained at its full and upwardly from their lower edges. capacityfor a much longer period. A horizontal diaphragm 6 is located near For afull understanding of the merits and the lower end of the casing and isprovided 75 25 advantages of the invention reference is to be near itsends with openings controlled by had to the accompanying drawings andtheA valves 7 and 8 and midway of its end with following description. araised portion 9, grooved to receive a pack- The improvement issusceptible of various ing 10, by means of which a water-tight jointchanges in the form, proportion, and the is had between a rock-shaft 1land the lower 8o 3o minor details of construction without departportionor diaphragm 6 of the casing. The ing from the principle or sacrificingany of oscillating piston l2 is attached at its lower the advantagesthereof, and to a full discloendto the rock-shaft 11, and its upper endsure of the invention an adaptation thereof is travels over the lower orconcaved surface of shown in the accompanying drawings, in theintermediate diaphragm 1, said shaft 1l 85 3 5 whichbeing oscillated inany convenient way and Figure l is an elevation of a pump conby means ofa lever 13, secured to an end structed in accordance with thisinvention, thereof. the near side of the casing being omitted to Thewater or other liquid enters the casing disclose the internalconstruction and relaby way of the inlet 14 and escapes through 9o 4otive arrangement of the parts. Fig. 2 is a the outlet l5, the latterbeing above the invertical central transverse section thereof.termediate diaphragm l, and the inlet at the Corresponding and likeparts are referred lower end of the casing and below the horito in thefollowing description and indicated Zontal diaphragm 6. The severalvalves are in both views of the drawings by the same of the flap typeand are secured at one edge 95 45 reference characters. to the casing bybeing slipped into wedge- The casing in side elevation is expanded atshaped grooves formed therein, as indicated. a point intermediate of itstop and bottom, The perimetal portion of the casing and one and theupper and lower portions are conend thereof are integrally formed, asclearly tracted and are separated by a diaphragm l indicated in Fig. 2,and the open side is closed roo 5o of arcuate form intermediate of itsends and bya removable end or head 16, which is bolted having itsterminal portions upwardly deor fastened thereto in any of the wayscommonly resorted to forattaching heads to `:cylinders and casingsnvtheconstruction of engines, pumping machinery, &c.

The lower or concaved surface of the arcuate portion of the intermediatediaphragm l isconcentric with the axis of the rock-shaft ll. Hence atight joint is maintained between it and the free end-of the piston atall' stages of movement of the latter, and by having the partsrelatively disposed, as shown, sand, gravel, and like matter cannotlodge upon the active or concave portion of the intermediate diaphragmand cause agrinding and wearing away thereof during the sweepingmovements of the piston thereover. Again, by having the raised portion9, sand and like matter are not liable to come between the packing l0and the rock-shaft 1l and cause the rapid wearing away of these parts.Any matter tending to accumulate in `the lower portion of thecasing uponeither side jof the elevated portion 9 will readilyescape through theopenings controlled by the-valves 7 and 8. Thus itwll be seen that thepump is constructedwith especial referenceto clearing itself.automatically of any sand orforeign substance entering and lodgingtherein, whereby the life andusefulness of the pump are prolonged YandVrepairs notfrequently required,

vand the operating parts easily accessible .by

simply removing the head orendl.

The pump does not `differrmaterially ingop- .eration from those of Atheclass represented thereby,rand as the piston is 4oscillated theinduction-valves 7 and 8 alternately open and closeand theeduction-valves 3 and 4 correspondin gly open and close, wherebythewater or fluid drawn in through the inlet 14 escapes through the outlet15in` apractically c ontinuous. and unbroken stream, .whichzisuniformbyreason-of the'air-space 5 serving as an airdrum commonly provided indouble-acting pumps.

Having thus described the invention, what is claimed as new is- Apumpconstructed substantially as shown and described, comprising a casinghaving its sides converging from an intermediate point toward its ends,a crown connecting the upper converging ends and forming an air-dome, anarcuate diaphragm having its end portions .inclining upwardly andoutwardly and joined to the sides at their point of convergence,inwardly and upwardly opening valves for controlling openings in thesaid inclined end portions of the diaphragm, a straight diaphragmconnecting the lower converging. sides, and havinga central raisedportion provided with a packing, upwardly and outwardly opening valvescontrolling openings in the ends of the horizontal diaphragm,arock-shaft journaled inthe heads of ,the casing and havin gits lowerportion vforming a tight joint with the said packing, and a straightpiston projecting fromLthe rock-shaft and having its free endconstructed to work over and against the concave sideof the arcuatediaphragm, the'casing having an inlet below thestraight diaphragm and anoutletabove the arcuate diaphragm and below the air-dome, substantiallyVas set forth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in vthepresence vof two witnesses.

